Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 22-01-2023 and time 17:02:50 (Italy) in region 4 km W Bolognola (MC)

A magnitude ML 1.4 earthquake occured in region: 4 km W Bolognola (MC), on

  • 22-01-2023 16:02:50 (UTC)
  • 22-01-2023 17:02:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9870, 13.1840 at 14 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Bolognola MC 4 142 142
Acquacanina MC 5 121 263
Ussita MC 6 444 707
Fiastra MC 6 559 1266
Fiordimonte MC 10 202 1468
Visso MC 10 1107 2575
Castelsantangelo sul Nera MC 10 281 2856
Sarnano MC 11 3264 6120
Pievebovigliana MC 12 866 6986
Pieve Torina MC 13 1458 8444
Montefortino FM 14 1178 9622
Amandola FM 14 3629 13251
Monte Cavallo MC 15 145 13396
Cessapalombo MC 15 512 13908
Montemonaco AP 15 604 14512
Gualdo MC 16 815 15327
Muccia MC 16 915 16242
Preci PG 17 724 16966
Caldarola MC 17 1823 18789
San Ginesio MC 17 3498 22287
Camporotondo di Fiastrone MC 18 563 22850
Camerino MC 19 6974 29824
Comunanza AP 19 3166 32990

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
64 Km NE of Terni (111501 inhabitants)
66 Km E of Perugia (166134 inhabitants)
73 Km N of L'Aquila (69753 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
95 Km NW of Montesilvano (53738 inhabitants)
96 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.4 2023-01-22
16:02:50		 42.9868 13.1838 14 2024-03-01
17:18:14		 Bollettino Sismico Italiano INGV 119971231
Reviewed
Rev100 		ML 1.4 2023-01-22
16:02:50		 42.9867 13.1795 14 2023-01-22
16:15:52		 Sala Sismica INGV-Roma 113733131
Reviewed
Rev100 		ML 1.4 2023-01-22
16:02:50		 42.9857 13.1847 15 2023-01-22
16:15:04		 Sala Sismica INGV-Roma 113733121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-22 16:02:50 ± 0.08
Latitude 42.9868 ± 0.0036
Longitude 13.1838 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 119971231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 397
Semi-minor axis of confidence ellipse (meter) 125
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 22
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.07554
Epicentral distance of station farthest from the epicenter (degree) 0.32106
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 113733131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-22 16:15:52

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 113733121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-22 16:15:04

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 119971231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-08-09 14:49:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SNTG.HHZ. 2023-01-22T16:03:03.17 0.3 undecidable manual S 327 35.6421 96 0.25 69
IV.MF5.EHZ. 2023-01-22T16:03:00.17 0.6 undecidable manual S 90 22.3554 104 0.75 41
IV.CESI.HHZ. 2023-01-22T16:02:59.80 0.6 undecidable manual S 275 22.755 104 0.29 47
IV.NRCA.HHZ. 2023-01-22T16:02:58.10 0.6 undecidable manual S 198 17.871 111 -0.18 48
IV.MMO1.EHZ. 2023-01-22T16:02:57.40 0.6 undecidable manual S 130 15.1737 118 -0.21 47
IV.FEMA.HNE. 2023-01-22T16:02:57.09 0.6 undecidable manual S 256 11.1777 130 0.35 47
IV.SNTG.HHZ. 2023-01-22T16:02:57.71 0.3 undecidable manual P 327 35.6421 96 -0.13 70
IT.MTCL.HGE. 2023-01-22T16:02:57.61 0.6 undecidable manual S 273 14.9739 118 0.04 50
7F.SIB2.EHE. 2023-01-22T16:02:57.20 0.3 undecidable manual S 137 14.3745 120 -0.24 71
IV.PF6.EHN. 2023-01-22T16:02:57.70 0.3 undecidable manual S 3 16.7721 114 -0.3 69
7F.SIB1.EHE. 2023-01-22T16:02:57.10 0.3 undecidable manual S 146 12.3765 126 0.12 74
IV.GUMA.HHZ. 2023-01-22T16:02:57.97 0.6 undecidable manual S 56 14.874 118 0.42 46
IV.MC2.EHZ. 2023-01-22T16:02:56.60 0.6 undecidable manual S 177 8.3805 140 0.41 47
IV.CSP1.EHE. 2023-01-22T16:02:56.80 0.3 undecidable manual S 8 11.7771 128 -0.05 73
IV.FDMO.HHZ. 2023-01-22T16:02:56.40 0.6 undecidable manual S 305 9.5793 135 -0.01 50
IV.MF5.EHZ. 2023-01-22T16:02:55.94 0.1 undecidable manual P 90 22.3554 104 0.12 97
IV.NRCA.HHZ. 2023-01-22T16:02:55.02 0.1 negative manual P 198 17.871 111 -0.14 96
IV.CESI.HHZ. 2023-01-22T16:02:55.83 0.1 positive manual P 275 22.755 104 -0.05 97
7F.SIB2.EHE. 2023-01-22T16:02:54.44 0.1 undecidable manual P 137 14.3745 120 -0.23 94
IV.PF6.EHN. 2023-01-22T16:02:54.76 0.1 undecidable manual P 3 16.7721 114 -0.24 94
IV.FDMO.HHZ. 2023-01-22T16:02:54.06 0.1 undecidable manual P 305 9.5793 135 -0.02 99
7F.SIB1.EHE. 2023-01-22T16:02:54.44 0.1 undecidable manual P 146 12.3765 126 0.03 100
IV.GUMA.HHZ. 2023-01-22T16:02:54.80 0.1 negative manual P 56 14.874 118 0.06 100
IV.MC2.EHZ. 2023-01-22T16:02:54.12 0.1 negative manual P 177 8.3805 140 0.16 99
IV.MMO1.EHZ. 2023-01-22T16:02:54.59 0.1 undecidable manual P 130 15.1737 118 -0.18 95
IV.FEMA.HNE. 2023-01-22T16:02:54.38 0.3 undecidable manual P 256 11.1777 130 0.11 74
IV.CSP1.EHE. 2023-01-22T16:02:54.29 0.1 undecidable manual P 8 11.7771 128 -0.05 98
IT.MTCL.HGE. 2023-01-22T16:02:54.60 0.3 undecidable manual P 273 14.9739 118 -0.15 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.2 0.000169 0.3 AML other m 2023-01-22T16:02:56.50
IV.FDMO.HHN. ML:1.3 0.0002315 0.12 AML other m 2023-01-22T16:02:56.87
IV.MC2.EHE. ML:1.4 0.0003112 1.44 AML other m 2023-01-22T16:02:57.82
IV.NRCA.HHE. ML:1.5 0.00020899999999999998 0.18 AML other m 2023-01-22T16:02:58.23
IV.GUMA.HHN. ML:1.4 0.0001871785 0.3968 AML other m 2023-01-22T16:02:58.32
IV.MC2.EHN. ML:1.5 0.00033350000000000003 0.84 AML other m 2023-01-22T16:02:58.49
IV.NRCA.HHN. ML:1.4 0.000167 0.78 AML other m 2023-01-22T16:02:58.29
IV.GUMA.HHE. ML:1.2 0.00011971853 0.4096 AML other m 2023-01-22T16:03:00.52
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download